Tractor trailer tank body



FIG. 1 is a side elevational view of a tractor-trailer tank body showing my new design, it being understood that the opposite side is substantially a mirror image thereof, except for the omission of the ladder and catwalk;

FIG. 2 is a top plan view thereof;

FIG. 3 is a bottom plan view thereof;

FIG. 4 is an enlarged front elevational view thereof; and

FIG. 5 is an enlarged rear elevational view thereof. 

The ornamental design for a tractor-trailer tank body, as shown and described. 